[alsa-devel] [PATCH 32/58] ALSA: aoa: Constify snd_kcontrol_new items

[Takashi Iwai]

Most of snd_kcontrol_new definitions are read-only and passed as-is.
Let's declare them as const for further optimization.

There should be no functional changes by this patch.

Signed-off-by: Takashi Iwai <tiwai at suse.de>
---
 sound/aoa/codecs/onyx.c    | 2 +-
 sound/aoa/codecs/tas.c     | 2 +-
 sound/aoa/fabrics/layout.c | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/sound/aoa/codecs/onyx.c b/sound/aoa/codecs/onyx.c
index 83ab3e58a0d3..f85bc8a1e2a6 100644
--- a/sound/aoa/codecs/onyx.c
+++ b/sound/aoa/codecs/onyx.c
@@ -413,7 +413,7 @@ static int onyx_snd_single_bit_put(struct snd_kcontrol *kcontrol,
 }
 
 #define SINGLE_BIT(n, type, description, address, mask, flags)	 	\
-static struct snd_kcontrol_new n##_control = {				\
+static const struct snd_kcontrol_new n##_control = {			\
 	.iface = SNDRV_CTL_ELEM_IFACE_##type,				\
 	.name = description,						\
 	.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,			\
diff --git a/sound/aoa/codecs/tas.c b/sound/aoa/codecs/tas.c
index c60b78367fc9..d3e37577b529 100644
--- a/sound/aoa/codecs/tas.c
+++ b/sound/aoa/codecs/tas.c
@@ -369,7 +369,7 @@ static int tas_snd_mixer_put(struct snd_kcontrol *kcontrol,
 }
 
 #define MIXER_CONTROL(n,descr,idx)			\
-static struct snd_kcontrol_new n##_control = {		\
+static const struct snd_kcontrol_new n##_control = {	\
 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,		\
 	.name = descr " Playback Volume",		\
 	.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,	\
diff --git a/sound/aoa/fabrics/layout.c b/sound/aoa/fabrics/layout.c
index 801b2f7699c2..d2e85b83f7ed 100644
--- a/sound/aoa/fabrics/layout.c
+++ b/sound/aoa/fabrics/layout.c
@@ -655,7 +655,7 @@ static int n##_control_put(struct snd_kcontrol *kcontrol,		\
 			!!ucontrol->value.integer.value[0]);		\
 	return 1;							\
 }									\
-static struct snd_kcontrol_new n##_ctl = {				\
+static const struct snd_kcontrol_new n##_ctl = {			\
 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,				\
 	.name = description,						\
 	.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,                      \
-- 
2.16.4